LM of a stage 2, 2-cell embryo in vitro after first cleavage is complete and nuclei are apparent.
From: Veeck and Zaninovic´, 2003. Reproduced with permission of the publisher, Taylor & Francis Group.
Keywords: blastomere cell membrane, cleavage complete, cytoplasm of blastomere, first polar body, nucleus, nucleus of blastomere, second polar body, subzonal space
Source: The Virtual Human Embryo.